/* 统计分析页面样式 */
.analytics {
    max-width: 1200px;
    margin: 0 auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 2rem;
    color: #333;
    margin: 0;
}

.date-filter {
    display: flex;
    gap: 1rem;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: white;
    min-width: 120px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 50%;
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #333;
    margin: 0 0 0.5rem 0;
}

.stat-label {
    color: #666;
    margin: 0 0 0.5rem 0;
    font-size: 0.875rem;
}

.stat-change {
    font-size: 0.875rem;
    font-weight: 500;
}

.stat-change.positive {
    color: #28a745;
}

.stat-change.negative {
    color: #dc3545;
}

.charts-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chart-title {
    font-size: 1.25rem;
    color: #333;
    margin: 0 0 1rem 0;
}

.chart-placeholder {
    height: 200px;
    background: #f8f9fa;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    border: 2px dashed #ddd;
}

.recent-activity {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.section-title {
    font-size: 1.25rem;
    color: #333;
    margin: 0 0 1rem 0;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 6px;
}

.activity-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-text {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-weight: 500;
}

.activity-time {
    font-size: 0.875rem;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .charts-section {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }
}